Alloy 20 Pipes & Tubes

Alloy 20 Pipes & Tubes for process, pressure and heat-transfer lines, available on MetalMitra in seamless, ERW and welded to ASTM B 729, with mill-certified traceability on every lot.

Choose seamless, ERW, welded or fabricated construction across a broad spread of diameters, wall thicknesses, schedules and lengths for process, pressure and structural lines.

Alloy 20 (UNS N08020) was developed specifically to stand up to sulphuric acid. Alloy 20 (UNS N08020) is a niobium-stabilized nickel-iron-chromium alloy with copper and molybdenum, developed for excellent resistance to sulphuric acid and other aggressive chemical environments.

Product range

• Seamless Pipes — The go-to choice for high-pressure and high-temperature lines.
• ERW Pipes — Economical welded pipe for utility and process piping.
• Welded / EFW Pipes — Fusion-welded construction for large-diameter runs.
• Tubes — Round, square and rectangular tubes, plus U-bends for heat exchangers.

Why engineers choose it

• Sulphuric Acid Resistance — Developed specifically for sulphuric acid service.
• Stress Corrosion Resistance — Good resistance to chloride stress corrosion cracking.
• Niobium Stabilized — Reduced risk of carbide precipitation during welding.
• Good Fabricability — Forms, machines and welds without fuss.

Where it is used

• Chemical Processing
• Sulphuric Acid Plants
• Pharmaceutical
• Petrochemical
• Pickling Equipment
• Food Processing
• Synthetic Fibre Plants
• Heat Exchangers
• Process Piping
• Storage Tanks
• Fabrication
• General Engineering

Inspection & paperwork

Suppliers on MetalMitra back Alloy 20 Pipes & Tubes with the checks and paperwork your QA team expects.

• Dimensional & visual inspection
• Grade verification against the order
• Chemical composition verification
• Mechanical property testing
• Flattening / flaring tests as applicable
• Hydrostatic testing as applicable
• Ultrasonic / eddy current testing as applicable
• EN 10204 3.1 Mill Test Certificate
• Third-party inspection (TPI) on request

The MetalMitra advantage

• Checked sellers only — Every supplier profile is screened by MetalMitra before it goes live.
• Faster sourcing — Post one requirement and receive competitive offers without chasing calls.
• Paperwork sorted — MTC 3.1, test reports and TPI arranged as your project demands.
• Global logistics — Seaworthy packing and dispatch to project sites across the world.

Get a quote

Tell us the specification, quantity and destination you need for Alloy 20 Pipes & Tubes. MetalMitra connects you with suppliers who can deliver.

Technical note: Figures shown are indicative. Final acceptance should be based on the applicable standard, approved drawings and the MTC supplied with the material.